function isString(value){
	return 'string' == typeof value
}
function isObject(value){
	return 'object' == typeof value
}
function isArray(value){
	return 'array' == typeof value
}
//是否合法类型
function isLawfulType(type,value){
	let valye_type = typeof value
	if(isString(type)){
		type = type.toLowerCase()
		return type == valye_type
	}
	if(isArray(type)){
		return type.indexOf(valye_type)?true:false;
	}
	return false
}
function isFunction(value){
	return 'function' == typeof value
}
export {isObject,isString,isArray,isLawfulType,isFunction}